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Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations |
| Long-Quan Lai(赖龙泉)1,† and Zhao Li(李照)2 |
1 School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 School of Electronic Engineering, Chengdu Technological University, Chengdu 611730, China |
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Abstract Emission of matter-wave jets from a parametrically driven condensate has attracted significant experimental and theoretical attention due to the appealing visual effects and potential metrological applications. In this work, we investigate the collective particle emission from a Bose-Einstein condensate confined in a one-dimensional lattice with periodically modulated interparticle interactions. We give the regimes for discrete modes, and find that the emission can be distinctly suppressed. The configuration induces a broad band, but few particles are ejected due to the interference of the matter waves. We further qualitatively model the emission process and demonstrate the short-time behaviors. This engineering provides a way to manipulate the propagation of particles and the corresponding dynamics of condensates in lattices, and may find application in the dynamical excitation control of other nonequilibrium problems with time-periodic driving.
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Received: 28 May 2024
Revised: 05 July 2024
Accepted manuscript online: 09 July 2024
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PACS:
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03.75.Kk
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(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
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03.75.Nt
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(Other Bose-Einstein condensation phenomena)
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05.30.Jp
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(Boson systems)
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| Fund: This work was supported by the China Scholarship Council (Grant No. 201906130092), the Natural Science Research Start-up Foundation of Recruiting Talents of Nanjing University of Posts and Telecommunications (Grant No. NY223065), and the Natural Science Foundation of Sichuan Province (Grant No. 2023NSFSC1330). |
Corresponding Authors:
Long-Quan Lai
E-mail: lqlai@njupt.edu.cn
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Cite this article:
Long-Quan Lai(赖龙泉) and Zhao Li(李照) Interference-induced suppression of particle emission from a Bose-Einstein condensate in lattice with time-periodic modulations 2024 Chin. Phys. B 33 100303
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